Surface treatment

CorroFlo® (thermoplastic coating)

Alvenius FlowMax® pipes with internal and external CorroFlo® coating are ideal in environments where acidic water and aggressive chemicals are a problem.

FlowMax® pipes with CorroFlo® coating have unbeatable low flow resistance, and contributes to low energy consumption in the piping system.

The CorroFlo® coating minimises the risk for build-up of deposits on the inside of the pipe.



For extra-durable wear and impact protection, the external surface of the pipes can be treated with RocShield® on top of the CorroFlo® coating.

RocShield® is a 500 μm LDPE layer that offers extreme resistance, making it suitable for pipes used in exposed environments.

The surface structure with its good gripping properties also offers easier and safer handling.


Hot-Dip Galvanized (HDG)

Hot-Dip Galvanized (HDG) is an ideal surface coating for pipes that may need to be dismantled and reassembled as it provides a highly robust surface layer.

Such pipes are highly resistant to impact, wear and harsh weather conditions. What’s more, the zinc layer “heals” if damaged.


Rubber lined internal surface

For transportation of slurry and extremely abrasive media.


Products overview drawings and CAD for download